Triangular Braid Professional Series Djembe by Freedom Drums-19"-20" Tall x 9"-10" Playing Surface Hand-made from one-piece sustainably-harvested eco-friendly premium mahogany heartwood. Headed with premium shaved and untreated goatskins taken from the goat's spine for optimal thickness. Three-ring head construction locks the skin in place and eliminates slippage, helping to maintain tune and prolong the life of the skin. Roped with premium internally braided HTB non-stretch nylon rope strong enough to last a lifetime. Grooved spiral pattern hand-carved into the interior wall of the shell for crisp airflow and reduced overtones.